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Human Physiology Unit 1 Exam Review C
Test Description: BIOL G225
Instructions: Answer all questions to get your test result.
1) pre-mRNA is processed to form 'mature' mRNA by cutting out the non-coding ____ and splicing the ____ together
A
codons, anti-codons
B
introns, exons
C
exons, introns
D
anti-codons, codons
2) translation occurs in
A
mitochondria
B
the golgi
C
the rough endoplasmic reticulum
D
the cytoplasm
3) each 3 base codon in an mRNA molecule codes for a specific
A
lipopolysaccharide
B
intron
C
exon
D
amino acid
4) _____ RNA brings the amino acids to the ribosome during translation
A
ribosomal
B
nuclear
C
transfer
D
messenger
5) which of the following is NOT true of a catalyst?
A
it lowers the activation energy
B
it is not consumed in the reaction
C
it changes the reaction equilibrium to favor the product
D
it increases the reaction rate
6) the substrate binds to the ____ of the enzyme
A
conjugate site
B
active site
C
reactive site
D
allosteric site
7) which of the following are NOT true about enzymes?
A
very few enzymes require cofactors
B
as temperature increases from 25C to 37C, enzyme activity decreases
C
most enzymes are not sensitive to changes in pH
D
all of the rest are not true
8) digestive enzymes are typically produced in a(n) ______ form, known as a ____
A
inactive, zymogen
B
reactive, cataligen
C
inorganic, protozyme
D
active, pepsinogen
9) negative feedback type regulation of a metabolic pathway by its final product is called
A
RNA interference
B
allosteric inhibition
C
end-product inhibition
D
antangonistic inhibition
10) metal ions commonly seen in vitamins are often
A
polypeptide subunits
B
components of electolyte balance
C
antagonistic effectors
D
enzyme cofactors
11) the flow of energy in living systems is
A
vitadynamics
B
bioenergetics
C
entropy
D
thermodynamics
12) a calorie is a measure of ____, specifically the amount of it required to raise 1 gram of ___ by 1 _____
A
heat, water, degree centigrade
B
how good food tastes, flavor, umami unit
C
energy, a substance, degree kelvin
D
biodynamic potential, cells, milivolt/minute
13) the capital 'C' dietary Calorie is actually _____ science lab calories
A
1/1000
B
100
C
10
D
1000
14) the energy used by cells is in the form of
A
chemcial bonds
B
ionic potentials
C
thermal gradients
D
chemiosmotic gradients
15) the universal 'energy carrier' of the cell is, a ____
A
triglyceride, lipid
B
ATP, nucleic acid
C
Glucose, carbohydrate
D
ATP, amino acid
16) in an oxidation reaction, the thing being oxidized
A
loses electrons
B
is simultaneously reduced
C
has the lower energy level
D
gains electrons
17) in living things, ______ reactions break down molecules, while ______ reactions build more complex molecules
A
aerobic, anaerobic
B
catabolic, anabolic
C
chemical, biological
D
endergonic, exergonic
18) organic reactions that require an input of energy are said to be ____, while those that release energy are _____
A
catabolic, anabolic
B
aerobic, anaerobic
C
endergonic, exergonic
D
enthalpic, entropic
19) fats are not an energy source for
A
the liver
B
the heart
C
the brain
D
resting skeletal muscle
20) glycogenolysis, the ____ of _____, is the opposite of ______
A
breakdown, glycogen; glycogenesis
B
bane, physiology students, an easy word like 'pancreas'
C
formation, glycogen, glyconeolysis
D
addition, fatty acids to glycerol, delipification
*select an answer for all questions
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